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cpupower: Do not change the frequency of offline cpu

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Check if the cpu is online before changing the frequency/governor of
the cpu.

Reported-by: Pavaman Subramaniyam <pavsubra@linux.vnet.ibm.com>
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Acked-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Shilpasri G Bhat 2015-07-23 12:20:27 +05:30 committed by Rafael J. Wysocki
parent 52721d9d33
commit 2e5e8fd1ff
1 changed files with 4 additions and 0 deletions
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4
tools/power/cpupower/utils/cpufreq-set.c
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@ -17,6 +17,7 @@
#include "cpufreq.h"
#include "helpers/helpers.h"
#include "helpers/sysfs.h"
#define NORM_FREQ_LEN 32
@ -318,6 +319,9 @@ int cmd_freq_set(int argc, char **argv)
cpufreq_cpu_exists(cpu))
continue;
if (sysfs_is_cpu_online(cpu) != 1)
continue;
printf(_("Setting cpu: %d\n"), cpu);
ret = do_one_cpu(cpu, &new_pol, freq, policychange);
if (ret) {